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virsh: Expose virNodeGetFreePages
The new API is exposed under 'freepages' command. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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34f2d0319d
commit
9e3efe53de
@ -193,6 +193,167 @@ cmdFreecell(vshControl *ctl, const vshCmd *cmd)
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return ret;
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}
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/*
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* "freepages" command
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*/
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static const vshCmdInfo info_freepages[] = {
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{.name = "help",
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.data = N_("NUMA free memory")
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},
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{.name = "desc",
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.data = N_("display available free memory for the NUMA cell.")
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},
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{.name = NULL}
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};
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static const vshCmdOptDef opts_freepages[] = {
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{.name = "cellno",
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.type = VSH_OT_INT,
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.help = N_("NUMA cell number")
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},
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{.name = "pagesize",
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.type = VSH_OT_INT,
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.help = N_("page size (in kibibites)")
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},
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{.name = "all",
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.type = VSH_OT_BOOL,
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.help = N_("show free pages for all NUMA cells")
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},
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{.name = NULL}
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};
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static bool
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cmdFreepages(vshControl *ctl, const vshCmd *cmd)
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{
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bool ret = false;
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unsigned int npages;
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unsigned int *pagesize = NULL;
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int cell;
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unsigned long long *counts = NULL;
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size_t i, j;
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xmlNodePtr *nodes = NULL;
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int nodes_cnt;
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char *cap_xml = NULL;
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xmlDocPtr doc = NULL;
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xmlXPathContextPtr ctxt = NULL;
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bool all = vshCommandOptBool(cmd, "all");
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bool cellno = vshCommandOptBool(cmd, "cellno");
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VSH_EXCLUSIVE_OPTIONS_VAR(all, cellno);
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if (all) {
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if (!(cap_xml = virConnectGetCapabilities(ctl->conn))) {
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vshError(ctl, "%s", _("unable to get node capabilities"));
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goto cleanup;
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}
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if (!(doc = virXMLParseStringCtxt(cap_xml, _("capabilities"), &ctxt))) {
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vshError(ctl, "%s", _("unable to parse node capabilities"));
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goto cleanup;
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}
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nodes_cnt = virXPathNodeSet("/capabilities/host/cpu/pages", ctxt, &nodes);
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if (nodes_cnt <= 0) {
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vshError(ctl, "%s", _("could not get information about "
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"supported page sizes"));
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goto cleanup;
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}
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pagesize = vshMalloc(ctl, nodes_cnt * sizeof(*pagesize));
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for (i = 0; i < nodes_cnt; i++) {
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char *val = virXMLPropString(nodes[i], "size");
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if (virStrToLong_ui(val, NULL, 10, &pagesize[i]) < 0) {
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vshError(ctl, _("unable to parse page size: %s"), val);
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VIR_FREE(val);
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goto cleanup;
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}
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VIR_FREE(val);
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}
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npages = nodes_cnt;
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VIR_FREE(nodes);
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counts = vshMalloc(ctl, npages * sizeof(*counts));
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nodes_cnt = virXPathNodeSet("/capabilities/host/topology/cells/cell",
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ctxt, &nodes);
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for (i = 0; i < nodes_cnt; i++) {
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char *val = virXMLPropString(nodes[i], "id");
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if (virStrToLong_i(val, NULL, 10, &cell) < 0) {
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vshError(ctl, _("unable to parse numa node id: %s"), val);
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VIR_FREE(val);
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goto cleanup;
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}
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VIR_FREE(val);
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if (virNodeGetFreePages(ctl->conn, npages, pagesize,
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cell, 1, counts, 0) < 0)
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goto cleanup;
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vshPrint(ctl, _("Node %d:\n"), cell);
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for (j = 0; j < npages; j++) {
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vshPrint(ctl, "%uKiB: %lld\n", pagesize[j], counts[j]);
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}
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vshPrint(ctl, "%c", '\n');
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}
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} else {
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if (!cellno) {
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vshError(ctl, "%s", _("missing cellno argument"));
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goto cleanup;
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}
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if (vshCommandOptInt(cmd, "cellno", &cell) < 0) {
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vshError(ctl, "%s", _("Invalid cellno argument"));
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goto cleanup;
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}
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if (cell < -1) {
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vshError(ctl, "%s", _("cell number must be non-negative integer or -1"));
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goto cleanup;
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}
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pagesize = vshMalloc(ctl, sizeof(*pagesize));
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if (vshCommandOptScaledInt(cmd, "pagesize", (unsigned long long *) pagesize,
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1, UINT_MAX) < 0) {
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vshError(ctl, "%s", _("page size has to be a number"));
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goto cleanup;
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}
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/* page size is expected in kibibytes */
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pagesize[0] /= 1024;
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if (!pagesize[0]) {
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vshError(ctl, "%s", _("page size must be at least 1KiB"));
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goto cleanup;
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}
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counts = vshMalloc(ctl, sizeof(*counts));
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if (virNodeGetFreePages(ctl->conn, 1, pagesize, cell, 1, counts, 0) < 0)
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goto cleanup;
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vshPrint(ctl, "%uKiB: %lld\n", *pagesize, counts[0]);
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}
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ret = true;
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cleanup:
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xmlXPathFreeContext(ctxt);
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xmlFreeDoc(doc);
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VIR_FREE(cap_xml);
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VIR_FREE(nodes);
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VIR_FREE(counts);
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VIR_FREE(pagesize);
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return ret;
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}
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/*
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* "maxvcpus" command
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*/
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@ -977,6 +1138,12 @@ const vshCmdDef hostAndHypervisorCmds[] = {
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.info = info_freecell,
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.flags = 0
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},
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{.name = "freepages",
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.handler = cmdFreepages,
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.opts = opts_freepages,
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.info = info_freepages,
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.flags = 0
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},
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{.name = "hostname",
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.handler = cmdHostname,
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.opts = NULL,
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@ -516,6 +516,14 @@ cell and the total free memory on the machine. Finally, with a
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numeric argument or with --cellno plus a cell number it will display
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the free memory for the specified cell only.
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=item B<freepages> [{ [I<--cellno>] I<cellno> [I<--pagesize>] I<pagesize> |
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I<--all> }]
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Prints the available amount of pages within a NUMA cell. I<cellno> refers
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to the NUMA cell you're interested in. I<pagesize> is a scaled integer (see
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B<NOTES> above). Alternatively, if I<--all> is used, info on each possible
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combination of NUMA cell and page size is printed out.
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=item B<cpu-baseline> I<FILE> [I<--features>]
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Compute baseline CPU which will be supported by all host CPUs given in <file>.
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